Show:
Periodic Table Madness
P-P-P-Properties
Atoms Galore
Solids, Liquids & Gases Oh My!
Categorize This!
100
What are the science words we use instead of columns? What about rows?
What is groups and periods.
100
What are the two types of properties we can observe of a substance?
We can observe both physical and chemical properties of a substance.
100
What is matter?
Matter is anything around us that has mass (the stuff inside) and volume (takes up space).
100
What can you tell me about the movement of atoms that explains why a table top is so hard?
Atoms in a solid barely move around; they vibrate around a fixed position.
100
What are the 3 ways atoms can be arranged (combined) to form the matter around us?
Atoms can be arranged into elements, compounds or mixtures.
200
What is the difference between a chemical symbol and a chemical name?
A chemical symbol is a one or two letter abbreviation of an element name. For example, (H) is the chemical symbol for Hydrogen.
200
What is the difference between a physical and a chemical property?
When we observe a physical property, the substance does not change at all. When we observe a chemical property, the substance does change.
200
What are the two sections of an atom?
The inside part of the atom is called the nucleus. The inside part contains protons and neutrons. The outside part of the atom is called the electron cloud. The outside part contains electrons.
200
How do the atoms act in a liquid?
Atoms in a liquid have a little bit more energy than atoms in a solid. Atoms in a liquid flow, or move, around each other.
200
Are the contents of a can of pop an element, compound or mixture? WHY?
A can of pop is a mixture because the substances that make up the can of pop (water, sugar, flavoring, coloring) are not bonded together.
300
What happens to the atomic masses as we go across a period AND as we go down a group?
The atomic masses, or the number protons and neutrons, increases as we go across a period (left to right) and down a group.
300
Name 3 physical properties of matter.
Physical properties include mass, volume, density, color, texture, size, shape and more.
300
What are the three subatomic particles of an atom and what are their charges?
There are protons, which are positive. There are neutrons, which have no charge, or are neutral. There are electrons, which are negative.
300
Why do the molecules in a gas act like 7th graders after eating candy?
The atoms that make up a gas have the most energy from heat. They move around a lot more because of all of their energy.
300
Name 2 mixtures you can find in everyday life.
Mixtures in everyday life can include trail mix, fruit salad, "ah-goo-duck", soap and water, pasta salad and more.
400
The number of protons in an atomic is also equal to what other numbers?
In a neutral atom, the number of protons is also equal to the number of electrons and neutrons. For example, Nitrogen (N) has 7 protons. It also has 7 electrons and 7 neutrons.
400
How do we calculate the physical property of density?
Density is a heartbreaker! In order to calculate density, you must divide the mass of a substance by its volume.
400
How many electrons can be held in the first ring of the electron cloud? How many electrons can be held in any ring after that?
The first ring of the electron cloud always contains 2 electrons. Any ring after the first can contain up to 8 total electrons.
400
What causes a substance to change from a solid to a liquid to a gas?
Substance can switch states of matter based on how much heat energy they have. As the amount of heat energy increases (gets bigger), a substance can switch from a solid to a liquid to a gas.
400
What happens to the properties of each atom as they are chemically bonded to each other in a compound?
Each atom loses their original properties that they had when become chemically bonded to another atom. For example, sodium (Na) is highly reactive with water and chlorine (Cl) is a highly toxic green gas. When sodium chemically combines with chlorine, it create sodium chloride (NaCl) which is table salt. Something you eat!
500
What are the four pieces of information we can find about one element from the Periodic Table of Elements?
We can find the atomic number (# protons), the chemical symbol, the chemical name and the atomic mass (# protons + # neutrons).
500
Why do different substances have different properties?
Substances have different properties because they are made up of different combinations of atoms that have different properties.
500
Why do we say that an entire atom is neutral (has no charge)?
The nucleus is made of a certain number of positive particles called protons. The electron cloud is made of that same number of negative particles called electrons. The positive charges are cancelled out by the negative charges. If they didn't balance out, we would get shocked!
500
Are the states of matter a physical property or a chemical property?
The states of matter are a physical property because even though they change the amount of energy, the atoms themselves have not changed. For example, let's look at water. Ice cubes are made of water. If we melt an ice cube, is it still water? If we boil a pot of water, is the steam still water?
500
Explain the differences between an element, compound and mixture.
An element is just one type of atom. A compound is two or more different kinds of atoms chemically bonded together. A mixture is two or more substances not chemically bonded together.